30 weeks pregnant 3d ultrasound9/9/2023 If your provider needs to do an ultrasound in the first trimester, she may use a vaginal probe to get closer to your uterus. Many women will have an earlier 2D ultrasound as well. When you're done, the technician will probably give you a few black-and-white images as a keepsake. You'll be able to hear the heartbeat and if your baby is awake, you'll see movement on the screen. These waves bounce off your baby, and a computer translates the echoing sounds into video images that reveal details of your baby's body, position, and movements. During your ultrasound, a technician will use a handheld instrument called a transducer to send sound waves through your uterus. You'll probably have a 2D ultrasound about halfway through your pregnancy (between 18 and 22 weeks). What ultrasounds will I have during pregnancy? In a 4D ultrasound, a series of 3D images is put together to form a low-resolution video.
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